[Bug 39696] dual head: different vert refresh freq, applications sync to the wrong one

https://bugs.freedesktop.org/show_bug.cgi?id=39696

--- Comment #8 from Michel Dänzer michel@daenzer.net 2011-08-09 09:13:15 PDT --- (In reply to comment #7)

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Currently both Xv and GL sync to LVDS by default, no matter which output is primary, and no matter which CRTC they use: Even if DP is primary and CRTC 0, sync is on LVDS.

You might try assigning primary flag to the DP output. xrandr --output DisplayPort-0 --primary

That's what I tried, but both GL and Xv still sync to LVDS?

I was merely describing an idea for how we could make this work, not how it's currently working...